The Fox Youth Launch D30 Knee Guards adapt to your body while riding thanks to the D3O protector, following all your movements. Yet, they harden on impact to absorb impact energy. Afterwards, the foam returns to its soft, flexible original shape. A must-have for all your tours.   Fox Youth Launch D30 Knee Guards Features The Launch D3O Knee Guards are trusted by some of the world's best riders and have been designed with D3O world-leading impact protection.? Anatomically-shaped and asymmetrical shin guards provide pedal-friendly comfort? Slip-on fit with hook and loop adjuster? Perforated neoprene offers comfort & breathability EN1621-1 Level 1 CE Certification?